The Romantic Killer meme originates from the popular Netflix anime and manga series by Wataru Momose. The story follows Anzu Hoshino, a high schooler who is forced into a real-life dating simulation by a magical wizard named Riri. The humor stems from Anzu's extreme, often grotesque facial expressions as she aggressively rejects romantic tropes in favor of her three true loves: video games, chocolate, and her cat. On the internet, these reaction images have become a staple for 'anti-romance' sentiment and relatable introverted behavior, perfectly capturing the defiant energy of someone prioritizing their hobbies over social expectations.